/**
 * Designed and developed by Aidan Follestad (@afollestad)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.afollestad.photoaffix.utilities.ext

import android.view.View
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Job
import kotlin.coroutines.CoroutineContext

fun View.scopeWhileAttached(
  context: CoroutineContext,
  exec: CoroutineScope.() -> Unit
) {
  val job = Job(context[Job])

  addOnAttachStateChangeListener(object : View.OnAttachStateChangeListener {
    override fun onViewAttachedToWindow(v: View) = Unit
    override fun onViewDetachedFromWindow(v: View) {
      job.cancel()
    }
  })

  exec(CoroutineScope(context + job))
}
